2 * Copyright (c) 2010 Stefano Sabatini
3 * Copyright (c) 2008 Vitor Sessak
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * transposition filter
25 * Based on MPlayer libmpcodecs/vf_rotate.c.
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/imgutils.h"
34 #include "libavutil/internal.h"
41 TRANSPOSE_PT_TYPE_NONE,
42 TRANSPOSE_PT_TYPE_LANDSCAPE,
43 TRANSPOSE_PT_TYPE_PORTRAIT,
51 /* 0 Rotate by 90 degrees counterclockwise and vflip. */
52 /* 1 Rotate by 90 degrees clockwise. */
53 /* 2 Rotate by 90 degrees counterclockwise. */
54 /* 3 Rotate by 90 degrees clockwise and vflip. */
56 PassthroughType passthrough; ///< landscape passthrough mode enabled
59 #define OFFSET(x) offsetof(TransContext, x)
60 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
62 static const AVOption transpose_options[] = {
63 { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, {.i64=0}, 0, 7, FLAGS },
65 { "passthrough", "do not apply transposition if the input matches the specified geometry",
66 OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" },
67 { "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
68 { "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
69 { "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
74 AVFILTER_DEFINE_CLASS(transpose);
76 static av_cold int init(AVFilterContext *ctx, const char *args)
78 TransContext *trans = ctx->priv;
79 const char *shorthand[] = { "dir", "passthrough", NULL };
81 trans->class = &transpose_class;
82 av_opt_set_defaults(trans);
84 return av_opt_set_from_string(trans, args, shorthand, "=", ":");
87 static int query_formats(AVFilterContext *ctx)
89 static const enum AVPixelFormat pix_fmts[] = {
90 AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA,
91 AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA,
92 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
93 AV_PIX_FMT_RGB565BE, AV_PIX_FMT_RGB565LE,
94 AV_PIX_FMT_RGB555BE, AV_PIX_FMT_RGB555LE,
95 AV_PIX_FMT_BGR565BE, AV_PIX_FMT_BGR565LE,
96 AV_PIX_FMT_BGR555BE, AV_PIX_FMT_BGR555LE,
97 AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY16LE,
98 AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUV420P16BE,
99 AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUV444P16BE,
100 AV_PIX_FMT_NV12, AV_PIX_FMT_NV21,
101 AV_PIX_FMT_RGB8, AV_PIX_FMT_BGR8,
102 AV_PIX_FMT_RGB4_BYTE, AV_PIX_FMT_BGR4_BYTE,
103 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
104 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
106 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_GRAY8,
110 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
114 static int config_props_output(AVFilterLink *outlink)
116 AVFilterContext *ctx = outlink->src;
117 TransContext *trans = ctx->priv;
118 AVFilterLink *inlink = ctx->inputs[0];
119 const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format);
120 const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format);
123 av_log(ctx, AV_LOG_WARNING,
124 "dir values greater than 3 are deprecated, use the passthrough option instead\n");
126 trans->passthrough = TRANSPOSE_PT_TYPE_LANDSCAPE;
129 if ((inlink->w >= inlink->h && trans->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) ||
130 (inlink->w <= inlink->h && trans->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) {
131 av_log(ctx, AV_LOG_VERBOSE,
132 "w:%d h:%d -> w:%d h:%d (passthrough mode)\n",
133 inlink->w, inlink->h, inlink->w, inlink->h);
136 trans->passthrough = TRANSPOSE_PT_TYPE_NONE;
139 trans->hsub = desc_in->log2_chroma_w;
140 trans->vsub = desc_in->log2_chroma_h;
142 av_image_fill_max_pixsteps(trans->pixsteps, NULL, desc_out);
144 outlink->w = inlink->h;
145 outlink->h = inlink->w;
147 if (inlink->sample_aspect_ratio.num){
148 outlink->sample_aspect_ratio = av_div_q((AVRational){1,1}, inlink->sample_aspect_ratio);
150 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
152 av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
153 inlink->w, inlink->h, trans->dir, outlink->w, outlink->h,
154 trans->dir == 1 || trans->dir == 3 ? "clockwise" : "counterclockwise",
155 trans->dir == 0 || trans->dir == 3);
159 static AVFilterBufferRef *get_video_buffer(AVFilterLink *inlink, int perms, int w, int h)
161 TransContext *trans = inlink->dst->priv;
163 return trans->passthrough ?
164 ff_null_get_video_buffer (inlink, perms, w, h) :
165 ff_default_get_video_buffer(inlink, perms, w, h);
168 static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *in)
170 TransContext *trans = inlink->dst->priv;
171 AVFilterLink *outlink = inlink->dst->outputs[0];
172 AVFilterBufferRef *out;
175 if (trans->passthrough)
176 return ff_filter_frame(outlink, in);
178 out = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
180 avfilter_unref_bufferp(&in);
181 return AVERROR(ENOMEM);
186 if (in->video->sample_aspect_ratio.num == 0) {
187 out->video->sample_aspect_ratio = in->video->sample_aspect_ratio;
189 out->video->sample_aspect_ratio.num = in->video->sample_aspect_ratio.den;
190 out->video->sample_aspect_ratio.den = in->video->sample_aspect_ratio.num;
193 for (plane = 0; out->data[plane]; plane++) {
194 int hsub = plane == 1 || plane == 2 ? trans->hsub : 0;
195 int vsub = plane == 1 || plane == 2 ? trans->vsub : 0;
196 int pixstep = trans->pixsteps[plane];
197 int inh = in->video->h>>vsub;
198 int outw = out->video->w>>hsub;
199 int outh = out->video->h>>vsub;
201 int dstlinesize, srclinesize;
204 dst = out->data[plane];
205 dstlinesize = out->linesize[plane];
206 src = in->data[plane];
207 srclinesize = in->linesize[plane];
210 src += in->linesize[plane] * (inh-1);
215 dst += out->linesize[plane] * (outh-1);
219 for (y = 0; y < outh; y++) {
222 for (x = 0; x < outw; x++)
223 dst[x] = src[x*srclinesize + y];
226 for (x = 0; x < outw; x++)
227 *((uint16_t *)(dst + 2*x)) = *((uint16_t *)(src + x*srclinesize + y*2));
230 for (x = 0; x < outw; x++) {
231 int32_t v = AV_RB24(src + x*srclinesize + y*3);
232 AV_WB24(dst + 3*x, v);
236 for (x = 0; x < outw; x++)
237 *((uint32_t *)(dst + 4*x)) = *((uint32_t *)(src + x*srclinesize + y*4));
244 avfilter_unref_bufferp(&in);
245 return ff_filter_frame(outlink, out);
248 static const AVFilterPad avfilter_vf_transpose_inputs[] = {
251 .type = AVMEDIA_TYPE_VIDEO,
252 .get_video_buffer= get_video_buffer,
253 .filter_frame = filter_frame,
254 .min_perms = AV_PERM_READ,
259 static const AVFilterPad avfilter_vf_transpose_outputs[] = {
262 .config_props = config_props_output,
263 .type = AVMEDIA_TYPE_VIDEO,
268 AVFilter avfilter_vf_transpose = {
270 .description = NULL_IF_CONFIG_SMALL("Transpose input video."),
273 .priv_size = sizeof(TransContext),
275 .query_formats = query_formats,
277 .inputs = avfilter_vf_transpose_inputs,
278 .outputs = avfilter_vf_transpose_outputs,
279 .priv_class = &transpose_class,